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Diffstat (limited to 'src/canvasitemparts.h')
| -rw-r--r-- | src/canvasitemparts.h | 291 |
1 files changed, 291 insertions, 0 deletions
diff --git a/src/canvasitemparts.h b/src/canvasitemparts.h new file mode 100644 index 0000000..44bd6be --- /dev/null +++ b/src/canvasitemparts.h @@ -0,0 +1,291 @@ +/*************************************************************************** + * Copyright (C) 2003-2005 by David Saxton * + * david@bluehaze.org * + * * + * This program is free software; you can redistribute it and/or modify * + * it under the terms of the GNU General Public License as published by * + * the Free Software Foundation; either version 2 of the License, or * + * (at your option) any later version. * + ***************************************************************************/ + +#ifndef CANVASITEMPARTS_H +#define CANVASITEMPARTS_H + +#include <qcanvas.h> +#include <qguardedptr.h> +#include <qslider.h> +#include <qtoolbutton.h> + +class Cells; +class CIWidgetMgr; +class CNItem; +class SliderWidget; +class ToolButton; +class QString; + +class GuiPart : public QObject, public QCanvasRectangle +{ + Q_OBJECT + public: + /** + * Create a GuiPart. Control the position using setGuiPartSize, instead + * of calling QCanvasRectangle::setSize. This allows GuiPart to know + * when its size has been changed + */ + GuiPart( CNItem *parent, const QRect & r, QCanvas * canvas ); + virtual ~GuiPart(); + + virtual QRect recommendedRect() const { return m_originalRect; } + void setOriginalRect( const QRect & r ) { m_originalRect = r; } + + virtual void updateConnectorPoints( bool add ); + + /** + * Set the angle that the GuiPart draws itself (if the GuiPart chooses + * to use it by calling initPainter and deinitPainter from drawShape). + * Note that this doesn't affect the rectangle position that the + * GuiPart is in. The rotation is taken to be about the center of the + * rectangle. + */ + void setAngleDegrees( int angleDegrees ); + /** + * Control the size. Call this instead of QCanvasRectangle::setSize. In + * turn, this function will notify subclasses via posChanged(); + */ + void setGuiPartSize( int width, int height ); + /** + * Returns the rectangle to draw in to compensate for rotation of + * the QPainter + */ + QRect drawRect(); + + int angleDegrees() const { return m_angleDegrees; } + CNItem *parent() const { return p_parent; } + + protected: + /** + * Called when the size or angle changes + */ + virtual void posChanged() {;} + /** + * Rotate / etc the painter. You must call deinitPainter after + * calling this function. + */ + void initPainter( QPainter & p ); + /** + * Complement function to initPainter - restores painter to normal + * transform + */ + void deinitPainter( QPainter & p ); + int m_angleDegrees; + CNItem *p_parent; + bool b_pointsAdded; + QRect m_originalRect; + + private slots: + void slotMoveBy( double dx, double dy ); +}; + + +/** +@short Stores internal information about text associated with CNItem +@author David Saxton +*/ +class Text : public GuiPart +{ + Q_OBJECT + public: + Text( const QString &text, CNItem *parent, const QRect & r, QCanvas * canvas, int flags = Qt::AlignHCenter | Qt::AlignVCenter ); + ~Text(); + + /** + * Set the text, returning true if the size of this Text on the canvas + * has changed. + */ + bool setText( const QString & text ); + virtual QRect recommendedRect() const; + virtual void drawShape ( QPainter & p ); + /** + * The text flags (see QPainter::drawText) - Qt::AlignmentFlags and + * Qt::TextFlags OR'd together. + */ + int flags() const { return m_flags; } + /** + * @see flags + */ + void setFlags( int flags ); + + protected: + QString m_text; + int m_flags; +}; +typedef QMap<QString, QGuardedPtr<Text> > TextMap; + + +/** +@short Base class for embedding Qt Widgets into the canvas +@author David Saxton +*/ +class Widget : public GuiPart +{ + public: + Widget( const QString & id, CNItem *parent, const QRect & r, QCanvas * canvas ); + ~Widget(); + + virtual int rtti() const; + + virtual QWidget *widget() const = 0; + QString id() const { return m_id; } + + /** + * Set the widget enabled/disabled + */ + void setEnabled( bool enabled ); + + virtual void enterEvent() {}; + virtual void leaveEvent() {}; + + /** + * Mouse was pressed. pos is given relative to CNItem position. + */ + virtual void mousePressEvent( QMouseEvent *e ) { Q_UNUSED(e); } + /** + * Mouse was released. pos is given relative to CNItem position. + */ + virtual void mouseReleaseEvent( QMouseEvent *e ) { Q_UNUSED(e); } + /** + * Mouse was double clicked. pos is given relative to CNItem position. + */ + virtual void mouseDoubleClickEvent( QMouseEvent *e ) { Q_UNUSED(e); } + /** + * Mouse was moved. pos is given relative to CNItem position. + */ + virtual void mouseMoveEvent( QMouseEvent *e ) { Q_UNUSED(e); } + /** + * Mouse was scrolled. pos is given relative to CNItem position. + */ + virtual void wheelEvent( QWheelEvent *e ) { Q_UNUSED(e); } + + virtual void drawShape( QPainter &p ); + + protected: + virtual void posChanged(); + QString m_id; +}; + + +class ToolButton : public QToolButton +{ + public: + ToolButton( QWidget* parent ); + + virtual void mousePressEvent( QMouseEvent *e ) { QToolButton::mousePressEvent(e); } + virtual void mouseReleaseEvent( QMouseEvent *e ) { QToolButton::mouseReleaseEvent(e); } + virtual void mouseDoubleClickEvent ( QMouseEvent *e ) { QToolButton::mouseDoubleClickEvent(e); } + virtual void mouseMoveEvent( QMouseEvent *e ) { QToolButton::mouseMoveEvent(e); } + virtual void wheelEvent( QWheelEvent *e ) { QToolButton::wheelEvent(e); } + virtual void enterEvent() { QToolButton::enterEvent(0l); } + virtual void leaveEvent() { QToolButton::leaveEvent(0l); } + + void setAngleDegrees( int angleDegrees ) { m_angleDegrees = angleDegrees; } + + protected: + virtual void drawButtonLabel( QPainter * p ); + + int m_angleDegrees; + QFont m_font; +}; + + +/** +@short Stores internal information about button associated with CNItem +@author David Saxton +*/ +class Button : public Widget +{ + Q_OBJECT + public: + Button( const QString & id, CNItem *parent, bool isToggle, const QRect & r, QCanvas * canvas ); + ~Button(); + + virtual void mousePressEvent( QMouseEvent *e ); + virtual void mouseReleaseEvent( QMouseEvent *e ); + virtual void enterEvent(); + virtual void leaveEvent(); + + /** + * Set the text displayed inside the button + */ + void setText( const QString &text ); + void setToggle( bool toggle ); + bool isToggle() const { return b_isToggle; } + virtual QWidget *widget() const; + bool state() const; + void setPixmap( const QPixmap & ); + void setState( bool state ); + virtual QRect recommendedRect() const; + + protected: + virtual void posChanged(); + + private slots: + void slotStateChanged(); + + private: + bool b_isToggle; // i.e. whether it should be depressed when the mouse is released + ToolButton *m_button; +}; + + +class SliderWidget : public QSlider +{ + public: + SliderWidget( QWidget* parent ); + + virtual void mousePressEvent( QMouseEvent *e ) { QSlider::mousePressEvent(e); } + virtual void mouseReleaseEvent( QMouseEvent *e ) { QSlider::mouseReleaseEvent(e); } + virtual void mouseDoubleClickEvent ( QMouseEvent *e ) { QSlider::mouseDoubleClickEvent(e); } + virtual void mouseMoveEvent( QMouseEvent *e ) { QSlider::mouseMoveEvent(e); } + virtual void wheelEvent( QWheelEvent *e ) { QSlider::wheelEvent(e); } + virtual void enterEvent() { QSlider::enterEvent(0l); } + virtual void leaveEvent() { QSlider::leaveEvent(0l); } +}; + + +/** +@short Stores internal information about a QSlider associated with CNItem +@author David Saxton +*/ +class Slider : public Widget +{ + Q_OBJECT + public: + Slider( const QString & id, CNItem *parent, const QRect & r, QCanvas * canvas ); + ~Slider(); + + virtual void mousePressEvent( QMouseEvent *e ); + virtual void mouseReleaseEvent( QMouseEvent *e ); + virtual void mouseDoubleClickEvent ( QMouseEvent *e ); + virtual void mouseMoveEvent( QMouseEvent *e ); + virtual void wheelEvent( QWheelEvent *e ); + virtual void enterEvent(); + virtual void leaveEvent(); + + virtual QWidget *widget() const; + int value() const; + void setValue( int value ); + void setOrientation( Qt::Orientation o ); + + protected: + virtual void posChanged(); + + private slots: + void slotValueChanged( int value ); + + private: + SliderWidget *m_slider; + Orientation m_orientation; +}; + +#endif + |